Sewing machine



Nov. 24 1925; 1,563,676

H. CORRALL ET AL SEWING MACHINE Filed Oct. 11, 1920 9 Sheets-Sheet 1Nov. 24 1925. 1,563,076

H. CQRRALL ET AL SEWING MACHINE Filed Oct. 11, 1920 9 Sheet s-Sheej 2Nov. 24 1925.

SEWING MACHINE Filed Oct. 11, 1920 9 Sheets-Sheet :5

Nov. 24 1925, V 1,563,076

7 H. CORRALL ET AL SEWING MACHINE Filed bot. 11, 1920 9 Shqqts-Sheet flyNov. 24 1925'. H. CORRALL ET AL SEWING MACHINE Filed Oct. 11, 1920 9Sheets-Sheet 5 J41. yam-M Nov. 24, 1925. 1,563,076

r H. CORRALL ET AL SEWING MACHINE *5 Filed Oct. 11, 1920 9 Sheets-SheetG Nov. 24, 1,563,076

H. CORRALL ET AL SEWING momma Filed Oct. 11, 1920 9 Sheets-Sheet 7 H.CORRALL' ET AL Nov. 24 1925 SEWING MACHINE Filed Oct. 11, 1920 9Sheets-Sheet 8 Nov. 24 1925. v 1,563,076

H. CORRALL ET AL sswme menus Filed Oct. 11, 1920 9 Sheets-Sheet 9 FIG./0.

Patented Nov. 2 1, 1925.

rA-renr crrren HE-BBEBT CORIQALL, F- HELENSBURGH AND BEE'DRAMl-EM'BRGSEI STEVENS, OF CIJYEDEIB ANK; fijGOTfLAN-D, ASSIGNOIELS '10 THESXNGEE MANUFACTURING GUIH- PANYyOF EIiIZABEZUH, NEWJEBSEY, GORRORATION;OF NEW JERSEY.

SEWI'lYG MACHINE.

Application-filed October 11, 19,20v

stitch seam previous to inilling, scour] 11g or dyeing whereby toprevent the edges or lists from curling in during the rmilling, scouringor dyeing operation,

The; invention pro-yidesinter alia, an imp ved;stitchw or lie m ch n s en in conjunction with ezcontinnous rotary feed mechanism, it beingunderstood that such inechenisms are epplicable to chain-stitch simmer-mchine ilzo her iyr eii 1 Wings- Fi 1 F sir-:2 e rentren ngles to eachother showing 'ai 'pendulous ca for g -a vcommon suppprt for; the needle-ba ir -en d: looper cer- 451g, 5, is e ,de view-0t err-alternati-Yeform. o -i i liiit iiiifiit Tn i sei a e y movements to the-i pdons-carrier. Figs. 6 land? 1 are detail eleyctions at right ngles to ,ieach. other ot, the deeper; aetuating mechanism. Figs. fiend Slaredetailviewslof the connections for actuating the power transmitteranglipriesser. EigQlQis a detail yiew showing the connection. betweenthe feedwheel and a d serving to carry the pieces being stitched.

ie e r ee'to fi e ew st del t the main shaft to. 1? is -adgtpted .to; beclutched the pulley -25, and; which is proed "with i -z enne t di r a Pman 4 to a crank 5 on the needle-actuating rock-shaft 6. To a crank 7 onthe rockshaft 6 is pivotally connected one end of a link 8 the other endof which is pivotelly connected to a collar 9 fixed to the needlebar 10carrying the needle 11 and mounted Serial No. 41 ,147.

for reciprocation in bearings 12, 13 in a movable support in the form 01a pendulous carrier 14 pivoted at its upper end at 15 to the head oi themachine frame and guided at its lower end by stationary guides 16;

the axis of the pivot 15 being parallel to the main shaft 1.

Cot-operating with the needle 11 in the production of stitches is thechain-stitch looper 17 fitted to a' carrier 18 mounted to rock on a pin19 projecting laterally from an arm 20 of a-sleeve 21 looselysurrounding apin 22 projecting from, and secured by screws 23 to, thelowerend of the pendulous carrier 14.

The carrier 1 1 thus presents a common movable support for theneedle-bar and looper-carr1er.

Loop-seizing movements are imparted to the looper 17 through theintermediary of a link 24 of which one end is pivotally connected to apin 25 fixed to the looper-carrier 18, the other end of the link- 24being pivotally connected to one arm 26 01" aibellcrank lencr which is.piyoted (at :27 and otwhich the other arm 28 is connected to the lowerendof a pitnien 29, the uppervend 0 which is connectedto- .atcre nk pin30 on a crank 31 on the needle-actuatingrock-shaft It .will beseenthatithe rocking movement of theisheft 6 produces rocking movementof-the looper-cerrier18on the pin 19.

Needle-'a-yoidingmovements are imparted to the looperlfl' bymechanismincluding an eccentric I32. on tliemain shaft 1 which impartsrocking moyement to a yolre of the pendulous carrier let producepositively reflected simultaneous lateral movements of the needle and ofthe looper in the direction of feed.

The feeding mechanism includes a spiked feed wheel 38 positively rotatedcontinuously in one direction, being driven from the main shaft 1through the intermediary of bevel gears 39, 40, worm ll and wormwheel4-2.

It will be understood that when it is desired to change the length ofstitch the cam is replaced by a cam of different contour such as 35 andcertain of the gears for driving the feed-wheel 38 are replaced by othergears.

(lo-operating with the feed-wheel 88 is a cloth-presser 44 carried byone arm 45 of a lever pivoted on a pin and having a rearwardly extendingarm 47 to which is pivotally connected the upper end of a link 18 havingat its lower end a slot entered by a pin 19 on an arm 50 on a shaft 51to which is fitted a manually operable lever 52, the pin and slotforming a lost motion con-- nection. Fixed to the shaft 51 is a cam 52;;engageable with a blade spring 54; fitted to one arm 55 of a leverfulcrumed at 56 and having arms 57 and 58.

lVhen the lever 52 is raised, the cam 53 rocks the lever 55, 57, 58 inopposition to the spring 59 and the stud (30 carried by the lever arm 57presses against the thrust stud (S1 fitted in the boss of the drivingpulley 2 whereby to effect endwise movement of the pulley 2 on the shaft1 into frictional driving relation with the fly-wheel 62 fixed to theshaft 1.

The lever arm 58 carries a brake 63 engageable with a brake surlace-onthe in wheel. 62.

Surrounding the pin &6 is a coil spring (i lof which one end enters anaperture in the pin 46 and theother end engages the lever arm 45.

lVhen the lever 52 is raised the pin 41'!) rises in the slot 50; thespring 64!; then effects depression of the presser.

Depression of the lever 52 causes the presser to be raised in oppositionto the spring G l, the pulley 2 is disengaged from the fly-wheel 62 andthe brake 63 applied.

The pin-and-slot connection 49, 50 permits rise and fall of the presserfor different thicknesses of material without affecting the clutch.

As shown in Fig. 10, the feed wheel 38 has a driving crank connection(35 with a spider 66 carrying a drum or cylinder (37 coaxial with saidfeedwheel and of suilicient length to accommodate the width of thepieces being stitched.

hat we claim is 1. In a sewing machine, in combination, a needle-bar, alooper-carrier, a looper, a movable support for said needle-bar andlooper-carrier, a drive shaft mounted independently of said support, anactuating connection between said shaft and said needle-bar, and anotheractuating connertion between said shaft and said loop-crcarrier, afeeding member, positively acting means for imparting movements to saidfeeding member, and means for vibrating said support in the direction offeed.

2. In a sewing machine, in combinatirni with the ma chine frame, apendulous carrier pivoted to said frame, a needle-bar mounted forreciprocation in said carrier, a looper sustained by said carrier, afeeding memoer rotatal,.e around an axis parallel to the pivot of saidcarrier, means for imparting rotary movement to said feeding member, andmeans for oscillating said carrier about its pivot.

o. in a sewing machine, a main shaft, a p;n h1ious *arricr pivoted on anaxis pare '0 said shaft, a need e-bar mounted for 'cciprocation in saidcarrier, a looper sus 11in id said carrier, a feeding member tatablearound axis parallel to said haft, positively acting connections betweensaid shaft ann said feeding member for im- 3' continuous rotary movementto said member, and a cam on said shaft a sewing machine, in combinationtie machine frame, a main shaft, a pendulous "arrier pivoted to saidframe, a needle-bar mounted for reciprocation in said carrier, a loopersustained by said carrier, connetions between said shaft ant. saidneedle-bar for in'iparting reciprocatory movements to said needle-bar,connections between said shaft and said looper for im- 'partingstitch-forming movements to said looper, and a cam on said shaft foroscillating said ca rrier on its pivot to effect late 'al vibrations ofsaid needle-bar and looper.

In a listing machine, in combination, stitch forming mechanism includinga re ciprocatory needle and a looper, means for imparting stitch-formingmovements to said needle and looper, means for effecting positivelylateral movements of said needle and looper, a rotatable feeding member,means for effecting continuous rotary movement. of said feeding member,a worlecarrying drum coaxial with said feeding memher, and a drivingcrank connection be tween the feeding member and the said drum.

In testimony whereof we have signed our names to this specification.

HERBERT CORRALL.

BERTRAM AMBROSE STEVENS.

